We have had several clients who have expressed concerns about their age being a reason they might not get hired. It's a valid concern. People decide not to hire folks for all sorts of reasons, and age can be one of them (even though it's illegal).
I just turned 40 last week. I don't feel I'm any older, but I've noticed some white hairs creeping in here and there, my wrinkles are getting a little deeper on my face, I started making some grunts when I get up from the chair, and I started falling